Is 15psi Too Much On R33 Gtst?

[R33GOD]

tuner rekons to make a maximum of220-230 rwk i need to raise boost to at least 15-16 psi on a the hiflowed slide turbo but is it safe at that boost level with stock internals? here are my mods incase no one knows

-hiflow slide turbo

-pod

-pfc

-fmic

-3 in turbo back exhaust

- ebc

-555 cc injectors (in the way)

-tomei fuel pump in tank ( on the way)

[paulr33]

it will be ok

[leech_]

I am no tuner but i would say you won't have any problems partically with the supporting mods you have should be able to make 220 - 230 on maybe 13-14 psi with a highflow turbo. With 15 - 16 psi maybe 240 - 250.

[WogsRus]

no issues on mine so far, well actually plenty of issues, but none related to power output. I made 217 at the treads on stock turbo.

Saying that, need to check my head gasket, as it may be blown. LOL

[31r]

provideing you can control the thing from pinging have done a few 25s but timeing isues always pop up but you should be ok with these mods you have .

[R33GOD]

just as a comparison what would the slide hiflow compare to in a brand name turbo? example hks ect ect.

[MANWHORE]

you can't compare boost v boost for different turbos.

Boost is a measure of restriction.

At 16 psi, a stock turbo would flow x cfm. a slide would flow y cfm. A 3540 would flow z cfm.

[ctjet]

theoretically yes... but no

[tmc_2]

So basically if it took 10 psi to make 200rwk stock turbo and 10psi on a gt30r made for arguments sake 230rwkw. The eninge is under more load with the gt30r?

AM i correct saying psi is not a direct relation of stresses on teh motor.

[Sydneykid]

So basically if it took 10 psi to make 200rwk stock turbo and 10psi on a gt30r made for arguments sake 230rwkw. The eninge is under more load with the gt30r?

AM i correct saying psi is not a direct relation of stresses on teh motor.

More correctly put it would be that there are other stresses, RPM being the most dangerous.

cheers

[Sydneykid]

provideing you can control the thing from pinging have done a few 25s but timeing isues always pop up but you should be ok with these mods you have .

Not so much of a problem these days with high octane fuel and ethanol eg; Shell V Power Racing 100 ron with 5% ethanol.

cheers

[The Mafia]

I run 20psi... All day everyday..

[R33GOD]

20 psi damn man how long is that gonna last.

im just worried at 15 psi im gonna kill the engine cause i thrash 60% of the time. what would be the engines life span stock vs boosted be?

[Strik3r]

im fairly sure slide turbos are rated to 19psi safely... as far as what the stock internals will take.... i read that anything less than 270-280 rwkw is fine on stock internals.. so in answer, you should be able to easily run 18 psi quite safely.... with supporting mods you should be able to hit 250...

p.s. u will definately need that fuel pump and the bigger injectors to start getting much past 220-230... once you get those put in, go and get it retuned @ 18 PSI (or 20 if your prepared to accept the risks).

also remember that just because 9/10 people can run 18 or 20 psi every day with no probs, im sure there are stories of people running 16 psi on a highflow / bigger turbo that had their stock internals give up... its the risk u take i guess.

[The Mafia]

I run a Garrett GT3037 56t, .63 rear.

This thing pumps out some serious power, but is also a tiny bit laggy stopping the motor coping a hard hit everytime the power comes on.

I also cheat.........Water methanol Injection..

That cools the combustion temperatures by heaps, and prevents a lot of detonation. At one stage I did a few runs at 24psi and it just kept on pulling. Absolutely no detonation, and the AFR's were spot on.

Edited March 8, 2007 by The Mafia

[paulr33]

im fairly sure slide turbos are rated to 19psi safely... as far as what the stock internals will take.... i read that anything less than 270-280 rwkw is fine on stock internals.. so in answer, you should be able to easily run 18 psi quite safely.... with supporting mods you should be able to hit 250...

unless we can see the compressor flow maps for it saying its safe for xyz psi means nothing

its just the turbine speed that is driven by the manifold pressure. the more pressure the later the wastegate is opened, which means faster compressor speed. it doesnt mean its flowing more useful air, just means there is more pressure.

[R33GOD]

but is the standard head hasket going to be ok at 16psi?

[The Mafia]

after a year of 18psi, 20spi, and a few squirts of 24psi, mine hasn't gone yet.

[R33GOD]

well my tuner told me to run 16 psi so if he blows my car up he's payin for it lolz

[Gazee]

well my tuner told me to run 16 psi so if he blows my car up he's payin for it lolz

you can run whatever boost you want as long as the tune is spot on...

should tune it on 16psi and run like 15 or 14 to be safe if your paranoid...